It appears that later this month the “coast is clear” for those hoping to travel through the Devil’s Slide twin tunnels, as a grand opening date for the $440 million, eight-year project has been slated for March 25.

The self-anchored suspension tower may be what makes the new Bay Bridge tower iconic, but a hidden aspect of the structure actually acts as the nerve center of the new eastern span. The hollow center of the new Bay Bridge is essentially a corridor that runs 1.7 miles from the middle of the bay all the way to Oakland.

Two slick new mile-long tunnels are poised to divert motorists away from an ocean cliff-hanging roadway dubbed Devil’s Slide south of San Francisco to a smooth, Alpine-like passageway unlike any in the U.S. today.